/Engine/Source/Runtime/SignalProcessing/Public/DSP/Dsp.h
Returns the linear frequency of the input value. Maps log domain and range values to linear output (good for linear slider representation/visualization of log frequency). Reverse of GetLogFrequencyClamped.
namespace Audio { static float Audio::GetLinearFrequencyClamped ( const float InFrequencyValue, const FVector2D & Domain, const FVector2D & Range ) }